get World at war its the newest one and its better than the fourth in my opinion.
if you have to choose between 2nd/3rd go with the 2nd, the 2nd is the best call of duty game ever, except now no one plays online.

CoD 2 and 4 are the only ones to consider. They were made by Infinity Ward. 3 and 5 were made by Treyarch and really suck.

Agreed. I played CoD5 at my local LAN center. Yuck I didn't like it at all. The only reason I would buy it would be for that Zombie level...hah its awesome. I play way to much CoD4 online. I like it too much.

Agreed. I played CoD5 at my local LAN center. Yuck I didn't like it at all. The only reason I would buy it would be for that Zombie level...hah its awesome. I play way to much CoD4 online. I like it too much.

Yeah! The zombie mode Nacht der Untoten is amazing.
But Call of Duty 4 is better.